<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.20"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Newton Dynamics: C:/Development/newton-dynamics/newton-4.00/sdk/dCore/ndUtils.h Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
  $(document).ready(function() { init_search(); });
/* @license-end */
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectlogo"><img alt="Logo" src="logo_php.png"/></td>
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">Newton Dynamics
   &#160;<span id="projectnumber">4.00</span>
   </div>
  </td>
   <td>        <div id="MSearchBox" class="MSearchBoxInactive">
        <span class="left">
          <img id="MSearchSelect" src="search/mag_sel.svg"
               onmouseover="return searchBox.OnSearchSelectShow()"
               onmouseout="return searchBox.OnSearchSelectHide()"
               alt=""/>
          <input type="text" id="MSearchField" value="Search" accesskey="S"
               onfocus="searchBox.OnSearchFieldFocus(true)" 
               onblur="searchBox.OnSearchFieldFocus(false)" 
               onkeyup="searchBox.OnSearchFieldChange(event)"/>
          </span><span class="right">
            <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.svg" alt=""/></a>
          </span>
        </div>
</td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.20 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
</script>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('nd_utils_8h_source.html',''); initResizable(); });
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle">
<div class="title">ndUtils.h</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* Copyright (c) &lt;2003-2022&gt; &lt;Julio Jerez, Newton Game Dynamics&gt;</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">* </span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">* This software is provided &#39;as-is&#39;, without any express or implied</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">* warranty. In no event will the authors be held liable for any damages</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">* arising from the use of this software.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">* </span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">* Permission is granted to anyone to use this software for any purpose,</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">* including commercial applications, and to alter it and redistribute it</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">* freely, subject to the following restrictions:</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">* </span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">* 1. The origin of this software must not be misrepresented; you must not</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">* claim that you wrote the original software. If you use this software</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">* in a product, an acknowledgment in the product documentation would be</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">* appreciated but is not required.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">* </span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">* 2. Altered source versions must be plainly marked as such, and must not be</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">* misrepresented as being the original software.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">* </span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">* 3. This notice may not be removed or altered from any source distribution.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#ifndef __ND_UTILS_H__</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#define __ND_UTILS_H__</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;ndCoreStdafx.h&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;ndTypes.h&quot;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &quot;ndStack.h&quot;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &quot;ndMemory.h&quot;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">// assume this function returns memory aligned to 16 bytes</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#define ndAlloca(type, count) (type*) alloca (sizeof (type) * (count))</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">inline</span> ndInt32 ndExp2 (ndInt32 x)</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;{</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    ndInt32 exp = -1;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordflow">for</span> (; x; x &gt;&gt;= 1) </div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    {</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        exp ++;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    }</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    <span class="keywordflow">return</span> exp;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;}</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160; </div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keyword">inline</span> ndInt32 ndBitReversal(ndInt32 v, ndInt32 base)</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;{</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    ndInt32 x = 0;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    ndInt32 power = ndExp2 (base) - 1;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    <span class="keywordflow">do</span> </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    {</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        x += (v &amp; 1) &lt;&lt; power;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        v &gt;&gt;= 1;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        power--;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    } <span class="keywordflow">while</span> (v);</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    ndAssert(x &lt; base);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keywordflow">return</span> x;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;}</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="keyword">inline</span> T ndMod(T val, T mod)</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;{</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="keywordflow">return</span> T(fmod(T(val), T(mod)));</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;}</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="keyword">inline</span> T ndMin(T A, T B)</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;{</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <span class="keywordflow">return</span> (A &lt; B) ? A : B; </div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;}</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160; </div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; </div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="keyword">inline</span> T ndMax(T A, T B)</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;{</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keywordflow">return</span> (A &gt; B) ? A : B; </div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;}</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="keyword">inline</span> T ndClamp(T val, T min, T max)</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;{</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <span class="keywordflow">return</span> ndMax (min, ndMin (max, val));</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;}</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; </div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> ndSwap(T&amp; A, T&amp; B)</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;{</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    T tmp (A);</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    A = B;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    B = tmp;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;}   </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160; </div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">inline</span> T ndAbs(T A)</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;{</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="comment">// according to Intel this is better because is does not read after write</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    <span class="keywordflow">return</span> (A &gt;= T(0)) ? A : -A;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;}</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="keyword">inline</span> T ndSign(T A)</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;{</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="keywordflow">return</span> (A &gt;= T(0)) ? T(1) : T(-1);</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;}</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt; </div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> ndAreEqual(T A, T B, T tol)</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;{</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="comment">// deal with too small and de normal values.</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    <span class="keywordflow">if</span> ((ndAbs(A) &lt; tol) &amp;&amp; (ndAbs(B) &lt; tol)) </div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    {</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    ndInt32 exp0;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    ndFloat64 mantissa0 = frexp(ndFloat64 (A), &amp;exp0);</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    </div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    ndInt32 exp1;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    ndFloat64 mantissa1 = frexp(ndFloat64(B), &amp;exp1);</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordflow">if</span> (ndAbs(exp0 - exp1) &gt; 1)</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    {</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    }</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <span class="keywordflow">if</span> (exp0 != exp1)</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    {</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        <span class="keywordflow">if</span> (exp0 &gt; exp1)</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        {</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;            mantissa0 *= ndFloat32(2.0f);</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        }</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        <span class="keywordflow">else</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        {</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            mantissa1 *= ndFloat32(2.0f);</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        }</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    }</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keywordflow">return</span> ndAbs(mantissa0 - mantissa1) &lt; tol;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160; </div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="keyword">inline</span> T ndAnglesAdd (T angleInRadiand1, T angleInRadiand0)</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;{</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    T s1 = T(ndSin(angleInRadiand1));</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    T c1 = T(ndCos(angleInRadiand1));</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    T s0 = T(ndSin(angleInRadiand0));</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    T c0 = T(ndCos(angleInRadiand0));</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160; </div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    T s = s1 * c0 + s0 * c1;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    T c = c1 * c0 - s0 * s1;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <span class="keywordflow">return</span> T(ndAtan2(s, c));</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;}</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="preprocessor">#ifndef _MSC_VER </span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="preprocessor">    #define _stricmp(x,y) strcasecmp(x,y)</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160; </div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> strtolwr(<span class="keywordtype">char</span>* <span class="keyword">const</span> <span class="keywordtype">string</span>)</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;{</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">char</span> * cp = <span class="keywordtype">string</span>; *cp; ++cp)</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    {</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        <span class="keywordflow">if</span> ((*cp &gt;= <span class="charliteral">&#39;A&#39;</span>) &amp;&amp; (*cp &lt;= <span class="charliteral">&#39;Z&#39;</span>))</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        {</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;            *cp += <span class="charliteral">&#39;a&#39;</span> - <span class="charliteral">&#39;A&#39;</span>;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        }</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    }</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;}</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160; </div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;D_CORE_API ndUnsigned64 ndGetTimeInMicroseconds();</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160; </div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;D_CORE_API ndFloat64 ndRoundToFloat(ndFloat64 val);</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160; </div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;D_CORE_API <span class="keywordtype">void</span> ndThreadYield();</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160; </div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;D_CORE_API ndInt32 ndVertexListToIndexList(ndFloat64* <span class="keyword">const</span> vertexList, ndInt32 strideInBytes, ndInt32 compareCount, ndInt32 vertexCount, ndInt32* <span class="keyword">const</span> indexListOut, ndFloat64 tolerance = ndEpsilon);</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160; </div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;ndInt32 ndVertexListToIndexList(T* <span class="keyword">const</span> vertexList, ndInt32 strideInBytes, ndInt32 compareCount, ndInt32 vertexCount, ndInt32* <span class="keyword">const</span> indexListOut, T tolerance = ndEpsilon)</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;{</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    ndInt32 stride = ndInt32(strideInBytes / <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <a class="code" href="classnd_stack.html">ndStack&lt;ndFloat64&gt;</a> pool(vertexCount * stride);</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    ndFloat64* <span class="keyword">const</span> data = &amp;pool[0];</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    <span class="keywordflow">for</span> (ndInt32 i = 0; i &lt; vertexCount; ++i)</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    {</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        ndFloat64* <span class="keyword">const</span> dst = &amp;data[i * stride];</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        <span class="keyword">const</span> T* <span class="keyword">const</span> src = &amp;vertexList[i * stride];</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        <span class="keywordflow">for</span> (ndInt32 j = 0; j &lt; stride; ++j)</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        {</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;            dst[j] = src[j];</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        }</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    }</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160; </div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    ndInt32 count = ndVertexListToIndexList(data, ndInt32(stride * <span class="keyword">sizeof</span>(ndFloat64)), compareCount, vertexCount, indexListOut, ndFloat64(tolerance));</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="keywordflow">for</span> (ndInt32 i = 0; i &lt; count; ++i)</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    {</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        <span class="keyword">const</span> ndFloat64* <span class="keyword">const</span> src = &amp;data[i * stride];</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        T* <span class="keyword">const</span> dst = &amp;vertexList[i * stride];</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        <span class="keywordflow">for</span> (ndInt32 j = 0; j &lt; stride; ++j)</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;        {</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            dst[j] = T(src[j]);</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;        }</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    }</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160; </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="keywordflow">return</span> count;</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;}</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160; </div>
<div class="line"><a name="l00211"></a><span class="lineno"><a class="line" href="classnd_spin_lock.html">  211</a></span>&#160;<span class="keyword">class </span><a class="code" href="classnd_spin_lock.html">ndSpinLock</a></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;{</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <a class="code" href="classnd_spin_lock.html">ndSpinLock</a>()</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="preprocessor">#ifndef D_USE_THREAD_EMULATION  </span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;        :m_lock(0)</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    {</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    }</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160; </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    <span class="keywordtype">void</span> Lock()</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    {</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="preprocessor">        #ifndef D_USE_THREAD_EMULATION  </span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;            ndInt32 exp = 1;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            <span class="keywordflow">for</span> (ndUnsigned32 test = 0; !m_lock.compare_exchange_weak(test, 1); test = 0)</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            {</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;                Delay(exp);</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;            }</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="preprocessor">        #endif</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    }</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160; </div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    <span class="keywordtype">void</span> Unlock()</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    {</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="preprocessor">        #ifndef D_USE_THREAD_EMULATION  </span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            m_lock.store(0);</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="preprocessor">        #endif</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    }</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160; </div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="preprocessor">    #ifndef D_USE_THREAD_EMULATION  </span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        <span class="keyword">private</span>:</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        D_CORE_API <span class="keywordtype">void</span> Delay(ndInt32&amp; exp);</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        <a class="code" href="classnd_atomic.html">ndAtomic&lt;ndUnsigned32&gt;</a> m_lock;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;};</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160; </div>
<div class="line"><a name="l00247"></a><span class="lineno"><a class="line" href="classnd_scope_spin_lock.html">  247</a></span>&#160;<span class="keyword">class </span><a class="code" href="classnd_scope_spin_lock.html">ndScopeSpinLock</a></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;{</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    <a class="code" href="classnd_scope_spin_lock.html">ndScopeSpinLock</a>(<a class="code" href="classnd_spin_lock.html">ndSpinLock</a>&amp; spinLock)</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;        :m_spinLock(spinLock)</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    {</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        m_spinLock.Lock();</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    }</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160; </div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    ~<a class="code" href="classnd_scope_spin_lock.html">ndScopeSpinLock</a>()</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    {</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        m_spinLock.Unlock();</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    }</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160; </div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <a class="code" href="classnd_spin_lock.html">ndSpinLock</a>&amp; m_spinLock;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;};</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160; </div>
<div class="line"><a name="l00265"></a><span class="lineno"><a class="line" href="classnd_float_exceptions.html">  265</a></span>&#160;<span class="keyword">class </span><a class="code" href="classnd_float_exceptions.html">ndFloatExceptions</a></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;{</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    <span class="comment">//#define D_FLOAT_EXCEPTIONS_MASK   (EM_INVALID | EM_DENORMAL | EM_ZERODIVIDE)</span></div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="preprocessor">    #if defined (WIN32) || defined(_WIN32)</span></div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">        #define D_FLOAT_EXCEPTIONS_MASK (EM_INVALID | EM_DENORMAL)</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="preprocessor">    #else</span></div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="preprocessor">        #define D_FLOAT_EXCEPTIONS_MASK (FE_INVALID | FE_INEXACT)</span></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160; </div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    D_CORE_API <a class="code" href="classnd_float_exceptions.html">ndFloatExceptions</a>(ndUnsigned32 mask = D_FLOAT_EXCEPTIONS_MASK);</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    D_CORE_API ~<a class="code" href="classnd_float_exceptions.html">ndFloatExceptions</a>();</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160; </div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keyword">private</span>:</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    ndUnsigned32 m_floatMask;</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    ndUnsigned32 m_simdMask;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;};</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160; </div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160; </div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160; </div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="aclassnd_spin_lock_html"><div class="ttname"><a href="classnd_spin_lock.html">ndSpinLock</a></div><div class="ttdoc">Simple spin lock for synchronizing threads for very short period of time.</div><div class="ttdef"><b>Definition:</b> ndUtils.h:212</div></div>
<div class="ttc" id="aclassnd_stack_html"><div class="ttname"><a href="classnd_stack.html">ndStack</a></div><div class="ttdef"><b>Definition:</b> ndStack.h:53</div></div>
<div class="ttc" id="aclassnd_float_exceptions_html"><div class="ttname"><a href="classnd_float_exceptions.html">ndFloatExceptions</a></div><div class="ttdoc">Set cpu floating point exceptions, the original exception state is restored when the destructor is ca...</div><div class="ttdef"><b>Definition:</b> ndUtils.h:266</div></div>
<div class="ttc" id="aclassnd_scope_spin_lock_html"><div class="ttname"><a href="classnd_scope_spin_lock.html">ndScopeSpinLock</a></div><div class="ttdoc">Simple scope based spin lock.</div><div class="ttdef"><b>Definition:</b> ndUtils.h:248</div></div>
<div class="ttc" id="aclassnd_atomic_html"><div class="ttname"><a href="classnd_atomic.html">ndAtomic&lt; ndUnsigned32 &gt;</a></div></div>
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="dir_3b1dd73b9fb2aae500397c690f6e720e.html">newton-dynamics</a></li><li class="navelem"><a class="el" href="dir_884601d3c3a6558edcfce6787edcf8d1.html">newton-4.00</a></li><li class="navelem"><a class="el" href="dir_d26a41558ed903aead586c87f46b012f.html">sdk</a></li><li class="navelem"><a class="el" href="dir_e6025d0a45e21f3ed95ba73e94d27527.html">dCore</a></li><li class="navelem"><b>ndUtils.h</b></li>
    <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.8.20 </li>
  </ul>
</div>
</body>
</html>
